The cat was in the room just now.they went to the zoo last s

否定句：The cat wasn't in the room just now.They didn't go to the zoo last sunday.
一般疑问句：Is cat in the room just now?Did they go to the zoo last sunday?
肯定回答：Yes,it was./Yes,it is.Yes,they did.
否定回答：No,it wasn't./No,it isn't.No,they didn't.